I need to generate random integer between 1-n (where n is a positive whole number) to use for a unit test. I don't need something overly complicated to ensure true randomnesses - just an old fashioned random number.
How would I do that?
How does one construct and access a set of key-value pairs in C? To use a silly simple example, let's say I want to create a table which translates between an integer and its square root.
If I were writing javascript, I could just do this:
var squareRoots = {
4: 2,
9: 3,
16: 4,
25: 5
}
and then access them like:
var squareRootOf25 = squareRoots[5]
What's the prettiest way to do this in C? What if I want to use one type of enum as the key and another type of enum as the value?
Hi all,
in C++, when you define a function which takes one argument, you have to define the data type of that variable:
void makeProccess(int request)
However, I want to implement a function which takes different data types rather taking statically defined integer type.
void makeProccess(anyType request)
How can I design a proccess like this, any idea?
Thanks.
I've got a Registry class and there are a few Registry values that I want to access from within that Registry class. (There is a bit of a calculation with these values so I thought I'd just put all that code right in the Registry Class itself).
So we might have something within our RegistryRoutine.cls like:
Function GetMyValue() as integer
Dim R as new RegistryRoutine
<calculations>
GetMyValue=R.GetRegisetryValue (HKEY, key, value, etc.)
End Function
can anybody explain me what will be equivalent of this in java?
for (i =(sizeof(num)*8-1); i; i--)
num is given number not array i want reverse bits in integer
Is it possible to generate (highly probable) unique Integer from GUIDs?
int i = Guid.NewGuid().GetHashCode();
int j = BitConverter.ToInt32(Guid.NewGuid().ToByteArray(), 0);
Which one is better?
How do I do something like the following
SELECT ADDDATE(t_invoice.last_bill_date, INTERVAL t_invoice.interval t_invoice.interval_unit)
FROM t_invoice
...where the column t_invoice.last_bill_date is a date, t_invoice.interval is an integer and t_invoice.interval_unit is a string.
Basically, I want to determine a person's next bill date based on his desired billing frequency. Is there a better way to achieve this?
I want to accomplish something like the following (my interest is in the toInt() method). Is there any native way to accomplish this? If not, how can I get the integer associated with an enum value (like in C#) ?
enum Rate {
VeryBad(1),
Bad(2),
Average(3),
Good(4),
Excellent(5);
private int rate;
private Rate(int rate) {
this.rate = rate;
}
public int toInt() {
return rate;
}
}
Thanks
I want to apply a filter to an advantage table using multiple values for an Integer field.
The equivalent SQL would be:
SELECT * FROM TableName WHERE FieldName IN (1, 2, 3)
Is it possible to do the same on an AdsTable within having to repeat the field using an "OR"?
I want to something like:
Filter := 'FieldName IN (1, 2, 3)'
Instead of:
Filter := 'FieldName = 1 OR FieldName = 2 OR FieldName = 3'
Is their any cases in C++ Like these
case WM_COMMAND:
switch(LOWORD(wParam))
That happen when you change the text of a edit Box, I need to call a function when i change in edit box and store the value of the edit box into a Integer.
case EditCD: //ID of your edit
{
if (HIWORD(wParam) == EN_CHANGE)
MessageBox(hwnd, "Text!", "Test!", MB_OK);
return TRUE;
}
Doesnt work did i do it wrong?
I'm looking for just a simple method for permutating strings/integers in C++. I can easily do it in C#, but I'm just learning C++ and can't seem to find the right methods.
Can someone show me a simple example that will find all permutations of an integer? And then the exact same for a string?
I want to write a program to implement an array-based stack, which accept integer numbers entered by the user.the program will then identify any occurrences of a given value from user and remove the repeated values from the stack,(using Java programming language).
I just need your help of writing (removing values method)
e.g.
input:6 2 3 4 3 8
output:6 2 4 8
Hello,
I have these a file in a c program which consist of a string and 4 doubles and 2 integer in one line and there is a total of 28 lines, i want to read this file and load the data into an array. can someone help me solve this.
i am trying to generate a hex color value from an integer input, and I'm not sure I'm using the concat method correctly. when i output the string theColor, i only get "0x", any ideas?
public String generateColor(String redVal, String blueVal,
String greenVal, String alphaVal){
String theColor = "0x";
theColor.concat(alphaVal);
theColor.concat(redVal);
theColor.concat(greenVal);
theColor.concat(blueVal);
return theColor;
}
If I run this operation on List<Integer> for example, it works as expected (removes first 5 elements), but when I run it on a list of my objects, nothing happens (list stays the same).
list.subList(0, 5).clear();
My class is a pojo that doesn't implement equals or hashCode, if that matters.
I have a List with say size n, and i have to dynamically create n variables ie i want to dynamically create the variables depending upon the size of the list. How can i achieve this?
Say i have List as List year with n elements in it;
then i have to create the n Integer variables from the above list.
thanks.
What's the recommended way to print an integer with thousands separator? Best I've come up with so far is
let thousands(x:int64) = String.Format("{0:0,0}", x)
Which works in most cases, but prints zero as 00.
Why doesn't the following program return 0, since I am accessing p from a new A(), which has not had main called on it?
public class A {
public int p = 0;
public static void main(String[] args) {
p = Integer.parseInt(args[0]);
new B().go();
}
}
class B {
public void go() {
System.out.println(new A().p);
}
}
I am writing a program that is declaring an array of 100 integer numbers
and filling the array with random numbers using rand().
All I have so far is:
#include <iostream>
using namespace std;
int main()
{
int random_integer = rand();
Does such a thing exist? or could anyone please recommend how I could implement such a container?
basically I have a std::map which uses a 64bit integer as its key and a custom datatype as the containing item.
I need to be able to periodically remove items that havent been accessed in a while in the most optimal way. does anyone have any suggestions for this?
cheers
I'm building a toy interpreter and I have implemented a token class which holds the token type and value.
The token type is usually an integer, but how should I abstract the int's?
What would be the better idea:
// #defines
#define T_NEWLINE 1;
#define T_STRING 2;
#define T_BLAH 3;
/**
* Or...
*/
// enum
enum TokenTypes
{
t_newline,
t_string,
t_blah
};